[PATCH 5/5] xfs: kick inode writeback when low on memory

[Christoph Hellwig]

On Wed, Mar 02, 2011 at 02:06:02PM +1100, Dave Chinner wrote:
> I'm open to ideas here - I could convert the bdi flusher
> infrastructure to cmwqs rather than using worker threads, or move
> all dirty inode tracking and writeback into XFS, or ???

Tejun posted patches to convert the writeback threads to workqueues.
But I think sooner or later we should stop using VFS dirty state for
metadata.  By allowing the dirty_inode operation to return a value
and say it shouldn't be marked dirty that could be done relatively
easily.